CN1752571B - Electromagnetic wave screening structure for microwave oven door - Google Patents
Electromagnetic wave screening structure for microwave oven door Download PDFInfo
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- CN1752571B CN1752571B CN 200410071953 CN200410071953A CN1752571B CN 1752571 B CN1752571 B CN 1752571B CN 200410071953 CN200410071953 CN 200410071953 CN 200410071953 A CN200410071953 A CN 200410071953A CN 1752571 B CN1752571 B CN 1752571B
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- obstruction piece
- door
- lateral surface
- doorframe
- electromagnetic wave
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- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The present invention discloses an electromagnetic wave shielding structure for microwave oven door. It includes door frame, edge-sealing face, door blocking component and door hook placed on one sideend of door frame. The door frame is a frame of door combination body for closing front face of cooking cavity, the edge-sealing face is zigzag-formed on the edge of door frame for shielding electromagnetic wave outwards-leaked from door edge, and the blocking component also is combined in the edge of door frame. Said invention can effectively shield electromagnetic wave with different angles andvarious waveforms.
Description
Technical field
The invention relates to micro-wave oven, particularly a kind of electromagnetic wave screening structure of door for microwave oven.That is, can prevent to project the invention that the electromagnetic wave of barbecue inside, chamber leaks.
Background technology
Micro-wave oven is the device that utilizes the microwave cooking food of certain wavelength.As shown in Figure 1, micro-wave oven possesses barbecue chamber 2, and these barbecue chamber 2 opening parts are equipped with door 4.The microwave that utilizes magnetron (not shown) to take place is to the food heating in the barbecue chamber 2.At this moment, should evenly heat heated food, but because of the characteristic of microwave, food under static state, very difficult quilt evenly heats.
And then, when utilizing heating using microwave food, be placed with pallet 6 rotations of food, microwave is evenly projected on the food.
In addition, a side of door 4 is fitted with gate stop 8.Door 4 another sides combine with main body with hinge.Gate stop 8 can make door 4 and main body combine closely.
Fig. 2 is the sectional schematic diagram of door 4 obstruction piece structures, and Fig. 3 is the part schematic diagram of door 4 obstruction piece structures.As shown in the figure, the door 4 in conjunction with obstruction piece 10.Obstruction piece 10 is used to prevent to roast electromagnetic leaking in the chamber.Obstruction piece 10 constitutes obstruction portion 12, and obstruction portion 12 is integrally formed on the doorframe 11.In the obstruction piece 10 inner peripheral portions in conjunction with obstruction piece cover 13.Meanwhile, on the lateral surface in conjunction with door face board 15 and door glass 14.
Above-mentioned electromagnetic wave leakproof obstruction piece 10 is to make with metallic plate punching, and the obstruction portion 12 one warpages that are combined in door 4 inboards are formed on doorframe 11 outer peripheral edges portions.In addition, obstruction portion 12 possesses a plurality of
Shape joggling part 10a, 10b, 10c, 10d, 10e, 10f, 10g forms at interval between the end of joggling part 10g and the joggling part 10d.
Above-mentioned joggling part 10f on the 10g, is formed with a plurality of at regular intervals across warpage
Shape protuberance 10i is formed with notch part 10h between each protuberance 10i, and the breach of notch part 10h extends to the pars intermedia of joggling part.Notch part 10h and protuberance 10i are spaced formation at regular intervals along the outer rim of door 4.
In sum, conventional art has following problem.
The obstruction piece 10 that traditional microwave fire door 4 possesses can only shield the single-frequency electromagnetic wave that leaks internally by certain bandwidth.So, can not effectively shield the electromagnetic wave of various waveforms.
That is, micro-wave oven has the electromagnetic wave of various waveforms according to load in the barbecue chamber, and then from arbitrarily angled all possible leakage electromagnetic wave.So, for stable shielding, must possess and have strainability, and the obstruction piece of enough bandwidth.But conventional microwave oven obstruction piece 10 with same shape and size, is combined on the outer rim of door 4.So the micro-wave oven electromagnetic wave shielding performance of conventional art is very poor.The problem that is not easy especially to solve is near the position shielding electromagnetic waves gate stop 8 on the door 4.
Summary of the invention
Technical problem to be solved by this invention is, a kind of electromagnetic wave screening structure of door for microwave oven is provided, that is, each several part possesses the electromagnetic wave screening structure of big or small different obstruction piece.Can effectively shield and leak, improve the safety in utilization of product by the electromagnetic of this part.
In order to achieve the above object, the technical solution used in the present invention is: a kind of electromagnetic wave screening structure of door for microwave oven, comprise that microwave oven baking chamber opening part is equipped with door, doorframe, doorframe one side is provided with gate stop, doorframe is the framework of the door assembly in sealing barbecue front, chamber, it is characterized in that, also comprise the edge sealing surface, obstruction piece cover, door obstruction piece, warpage protruding upward forms the edge sealing surface at the edge of doorframe, the doorframe inboard is provided with the obstruction piece cover, the electromagnetic wave that shielding leaks from the door edge, and obstruction piece is combined in the edge of doorframe, have several warpage faces, the electromagnetic wave that shielding leaks from the edge of door assembly, in the door obstruction piece on the doorframe edge, the fabric width of part door obstruction piece lateral surface is less than the fabric width of the door obstruction piece lateral surface of other parts.
The upper end of above-mentioned obstruction piece lateral surface, the vertical warpage in side to the right, form the obstruction piece end face, make the obstruction piece end face corresponding with the upside of obstruction piece bottom surface, the upper end of obstruction piece lateral surface and obstruction piece end face have certain interval, be formed with notch part at interval, that is, obstruction piece lateral surface upper end and obstruction piece end face are arranged across certain intervals each other; Be formed with notch part at interval, non-notch part between the notch part forms each obstruction piece lateral surface and obstruction piece end face, and then makes notch part and obstruction piece lateral surface, and the arrangement alternate with each other of obstruction piece end face, the fabric width of each obstruction piece end face is relatively greater than the fabric width of each obstruction piece lateral surface; The doorframe side is provided with gate stop, also possesses a plurality of obstruction piece lateral surfaces on the doorframe side, and in the obstruction piece lateral surface at this place, the fabric width of partial blockage part lateral surface is relatively less than the obstruction piece lateral surface fabric width of other parts.
On the above-mentioned doorframe side, being positioned near the obstruction piece lateral surface fabric width of gate stop installation portion is 12mm, and the obstruction piece lateral surface fabric width of other parts is 14mm.
In sum, the invention has the beneficial effects as follows: have as above the present invention of structure, i.e. the electromagnetic wave screening structure of door for microwave oven has and can effectively shield the electromagnetic wave of various modes, and then prevents the advantage that electromagnetic wave leaks.
Micro-wave oven is the device that utilizes the microwave cooking food of certain wavelength.So, for cooking food inside possesses the barbecue chamber is arranged, come by the switch door assembly, open and close the barbecue chamber.In the electromagnetic wave screening structure of door for microwave oven of the present invention, on the doorframe edge in conjunction with special door obstruction piece with a plurality of warpage faces, this obstruction piece shape, not with a kind of shape, be in the door obstruction piece on the doorframe edge, the fabric width of partial blockage part lateral surface is less than the fabric width of the door obstruction piece lateral surface of other parts.Have obstruction piece shape on the position of gate stop installation portion and be different from shape on other position.And then, can effectively shield by the electromagnetic wave of a plurality of angle reflection projections and the electromagnetic wave of various waveforms.
Specifically, a side of doorframe promptly, has obstruction piece lateral surface fabric width on the gate stop installation portion position relatively less than the obstruction piece lateral surface fabric width on other position.And then the present invention can effectively shield by the electromagnetic of this part and leak.
In a word,, project on the human body, can improve the safety in utilization of product, and then improve the credit worthiness of product by preventing to project the electromagnetic wave of micro-wave oven inside.
Description of drawings
Fig. 1 is the barbecue chamber internal structure schematic diagram of conventional art micro-wave oven,
Fig. 2 is the door obstruction piece structure end view of conventional art door for microwave oven,
Fig. 3 is the door obstruction piece part schematic diagram of conventional art,
Fig. 4 is the decomposing schematic representation of door for microwave oven assembly of the present invention,
Fig. 5 is in the door for microwave oven electromagnetic wave screening structure of the present invention, schematic rear view in the door assembly,
Fig. 6 constitutes the door resistance of electromagnetic wave screening structure important component part in the door for microwave oven of the present invention
Plug part installment state cross-sectional side view,
Fig. 7 constitutes the door resistance of the important component part of electronic shield structure in the door for microwave oven of the present invention
The part schematic diagram of plug part.
Among the figure:
50: door face board 52: door handle
54: door glass 56: dividing plate
60: doorframe 62: the obstruction piece cover
64: closure plate 66: gate stop
70: the obstruction piece 72 of door: doorframe faying face
74: punching press sidewall 76: the obstruction piece bottom surface
78: obstruction piece lateral surface 80: the obstruction piece end face
82: shielding part A, A ': obstruction piece lateral surface fabric width
B: obstruction piece end face fabric width C: obstruction piece end face length
The specific embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail: Fig. 4 is a door for microwave oven assembly decomposing schematic representation of the present invention, and Fig. 5 is schematic rear view in the door in the shielding construction of door for microwave oven of the present invention.As shown in the figure, the front of door assembly possesses door face board 50, front one side of door face board 50, and the switch of door is formed with door handle 52 for convenience.
On the above-mentioned door face board 50 glass 54 is installed.The through hole 50 of door glass 54 on can shield door panel 50 ', this door glass 54 is transparent, sees through door glass 54 from the outside and can see barbecue inside, chamber.The back side of door glass 54 is provided with dividing plate 56.
Above-mentioned door face board 50, door glass 54, and dividing plate 56 is arranged on the doorframe 60.Doorframe 60 forms the frame part of door assembly.Doorframe 60 inboards are provided with obstruction piece cover 62, and obstruction piece cover 62 is used to prevent electromagnetic leakage.In addition, between doorframe 60 and the obstruction piece cover 62 closure plate 64 is arranged.
Because of the left-hand end of above-mentioned door assembly connects with hinge with the micro-wave oven main body, so can the rotary door assembly.In addition, the right-hand end of doorframe 60 has gate stop 66, and by gate stop, the right-hand end of door assembly and micro-wave oven main body are carried out hook lock.
As Fig. 6, shown in 7, door obstruction piece 70 is combined in the edge part of the doorframe 60 that constitutes the door assembly framework.
In addition, the edge part of doorframe 60 is formed with edge sealing surface 68.As shown in Figure 6, warpage protruding upward forms edge sealing surface 68 at the edge of doorframe 60.So edge sealing surface 68 can shield by doorframe 60 ovfl electromagnetic waves.
Above-mentioned door obstruction piece 70 is combined in the edge part of doorframe 60, has a plurality of warpage faces, can shield electromagnetic leaking.As shown in Figure 6, door is formed with the doorframe faying face 72 that combines with doorframe 60 on the obstruction piece 70, and the left-hand end of doorframe faying face 72 behind the warpage, prolongs and forms punching press sidewall 74 downward vertically.
Above-mentioned punching press sidewall 74 lower ends behind the vertical warpage in side, prolong and form obstruction piece bottom surface 76 left.In addition, the left-hand end of obstruction piece bottom surface 76 warpage that makes progress forms obstruction piece lateral surface 78.And then make obstruction piece lateral surface 78 corresponding with punching press sidewall 74.
The upper end of above-mentioned obstruction piece lateral surface 78, the vertical warpage in side to the right forms obstruction piece end face 80 again.And then make obstruction piece end face 80 corresponding with the upside of obstruction piece bottom surface 76.In addition, the left and right sides length of obstruction piece end face 80 is relatively less than the left and right sides length of obstruction piece bottom surface 76, and then makes the right-hand end of obstruction piece end face 80 and the upper end of obstruction piece bottom surface 76 form certain interval, and this shielding on is at interval shielded by obstruction piece cover 62.
In addition, as shown in Figure 7, on the upper end of obstruction piece lateral surface 78 and the obstruction piece end face 80, certain intervals is arranged, be formed with notch part 82. at interval promptly, the upper end of obstruction piece lateral surface 78 and obstruction piece end face 80, arrange across certain intervals each other, be formed with notch part 82, the non-notch part between the notch part 82 at interval, form each obstruction piece lateral surface 78 and obstruction piece end face 80. and then make notch part 82 and obstruction piece lateral surface 78, and obstruction piece 80 arrangements alternate with each other.
The fabric width B size of above-mentioned each obstruction piece end face 80 is relatively greater than the fabric width A size of each obstruction piece lateral surface 78 upper end.For example, the fabric width A of obstruction piece lateral surface 78 upper ends is 14mm, and the fabric width B of obstruction piece end face 80 is 15mm.
One side of above-mentioned doorframe 60 is provided with gate stop 66, and near the fabric width A ' of the obstruction piece 70 obstruction piece lateral surfaces 78 the gate stop 66 is relatively less than the fabric width A. of the obstruction piece lateral surface 78 of other parts
The fabric width A of common above-mentioned obstruction piece lateral surface 78 upper ends is 14mm, and the fabric width B of obstruction piece end face 80 is 15mm, and left and right sides length C is 11.8mm.But, one side of doorframe 60, promptly, the fabric width A that a plurality of obstruction piece lateral surfaces 78 upper ends on gate stop one side are installed is 12mm, the fabric width B of obstruction piece end face 80 and left and right sides width length are identical with the fabric width B and the left and right sides length C of the obstruction piece end face 80 at other position, and its value is respectively 15mm and 11.8mm.In more detail, having only near the fabric width A ' of obstruction piece lateral surface 78 upper ends of gate stop 66 installation portions is 12mm.
This structure can more effectively prevent by door assembly leakage electromagnetic wave than the obstruction piece structure that forms by same fabric width A without exception.
Routine accompanying drawing of practicality provided by the invention and method, just an example of lifting for concrete statement the technology of the present invention thought.Indubitable, in basic fundamental thought range of the present invention, also can there be improving one's methods of a lot of aspects.
Claims (3)
1. the electromagnetic wave screening structure of a door for microwave oven, comprise that microwave oven baking chamber opening part is equipped with door, doorframe, doorframe one side is provided with gate stop, doorframe is the framework of the door assembly in sealing barbecue front, chamber, it is characterized in that, also comprise the edge sealing surface, the obstruction piece cover, warpage protruding upward forms at the edge of doorframe for door obstruction piece, edge sealing surface, and the doorframe inboard is provided with the obstruction piece cover, the electromagnetic wave that shielding leaks from the door edge, obstruction piece is combined in the edge of doorframe, has several warpage faces, shields the electromagnetic wave that leaks from the edge of door assembly, in the door obstruction piece on the doorframe edge, the fabric width of part door obstruction piece lateral surface is less than the fabric width of the door obstruction piece lateral surface of other parts.
2. the electromagnetic wave screening structure of door for microwave oven according to claim 1, it is characterized in that the upper end of above-mentioned obstruction piece lateral surface, the vertical warpage in side to the right, form the obstruction piece end face, make the obstruction piece end face corresponding with the upside of obstruction piece bottom surface, the upper end of obstruction piece lateral surface and obstruction piece end face have certain interval, be formed with notch part at interval, that is, obstruction piece lateral surface upper end and obstruction piece end face are arranged across certain intervals each other; Be formed with notch part at interval, non-notch part between the notch part forms each obstruction piece lateral surface and obstruction piece end face, and then makes notch part and obstruction piece lateral surface, and the arrangement alternate with each other of obstruction piece end face, the fabric width of each obstruction piece end face is relatively greater than the fabric width of each obstruction piece lateral surface; The doorframe side is provided with gate stop, also possesses a plurality of obstruction piece lateral surfaces on the doorframe side, and in the obstruction piece lateral surface at this place, the fabric width of partial blockage part lateral surface is relatively less than the obstruction piece lateral surface fabric width of other parts.
3. the electromagnetic wave screening structure of door for microwave oven according to claim 2 is characterized in that, on the above-mentioned doorframe side, being positioned near the obstruction piece lateral surface fabric width of gate stop installation portion is 12mm, and the obstruction piece lateral surface fabric width of other parts is 14mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410071953 CN1752571B (en) | 2004-09-20 | 2004-09-20 | Electromagnetic wave screening structure for microwave oven door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410071953 CN1752571B (en) | 2004-09-20 | 2004-09-20 | Electromagnetic wave screening structure for microwave oven door |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1752571A CN1752571A (en) | 2006-03-29 |
| CN1752571B true CN1752571B (en) | 2010-05-05 |
Family
ID=36679527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410071953 Expired - Fee Related CN1752571B (en) | 2004-09-20 | 2004-09-20 | Electromagnetic wave screening structure for microwave oven door |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1752571B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3057381B1 (en) * | 2015-02-11 | 2017-08-23 | Electrolux Appliances Aktiebolag | An oven door for a microwave oven |
| CN109186216B (en) * | 2018-08-23 | 2023-08-22 | 绍兴市质量技术监督检测院 | Leak-proof microwave quick drying device |
| CN110493908B (en) * | 2019-08-13 | 2021-11-16 | 广西壮族自治区农业科学院 | Microwave leakage prevention grid and microwave heater |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1145998A (en) * | 1995-09-18 | 1997-03-26 | 大宇电子株式会社 | Microwave oven door having microwave shielding structure |
| CN1160153A (en) * | 1995-04-03 | 1997-09-24 | Lg电子株式会社 | Electromagnetic-wave leakage preventing door of microwave oven |
| CN1177084A (en) * | 1996-02-23 | 1998-03-25 | 三星电子株式会社 | Microwave leakage-preventing device for microwave oven |
| CN1192520A (en) * | 1997-03-05 | 1998-09-09 | 株式会社东芝 | High frequency heating device |
| US20040079751A1 (en) * | 2002-10-24 | 2004-04-29 | Lg Electronics Inc. | Door of microwave oven |
-
2004
- 2004-09-20 CN CN 200410071953 patent/CN1752571B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1160153A (en) * | 1995-04-03 | 1997-09-24 | Lg电子株式会社 | Electromagnetic-wave leakage preventing door of microwave oven |
| CN1145998A (en) * | 1995-09-18 | 1997-03-26 | 大宇电子株式会社 | Microwave oven door having microwave shielding structure |
| CN1177084A (en) * | 1996-02-23 | 1998-03-25 | 三星电子株式会社 | Microwave leakage-preventing device for microwave oven |
| CN1192520A (en) * | 1997-03-05 | 1998-09-09 | 株式会社东芝 | High frequency heating device |
| US20040079751A1 (en) * | 2002-10-24 | 2004-04-29 | Lg Electronics Inc. | Door of microwave oven |
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| Publication number | Publication date |
|---|---|
| CN1752571A (en) | 2006-03-29 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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Granted publication date: 20100505 Termination date: 20200920 |